CVS commit: src/sys/arch/alpha

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Tue Jul  6 12:20:52 UTC 2021

Modified Files:
        src/sys/arch/alpha/alpha: vm_machdep.c
        src/sys/arch/alpha/include: param.h

Log Message:
- Define STACK_ALIGNBYTES to override the default and ensure that
  stacks are 16-byte aligned, an assumption made by the compiler
  and recommended by the Alpha Architecture Handbook.
- cpu_lwp_fork(): Ensure 16-byte stack alignment if the caller specified
  one.

Addresses root casue of PR port-alpha/54307 and PR toolchain/56153.

Many thanks to rin@ for performing the root cause analysis and testing
changes.


To generate a diff of this commit:
cvs rdiff -u -r1.119 -r1.120 src/sys/arch/alpha/alpha/vm_machdep.c
cvs rdiff -u -r1.48 -r1.49 src/sys/arch/alpha/include/param.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.